Mrs. YANG, 95, who emigrated to New York had experienced the trauma of losing her husband and son. What kind of power has kept writing letters to the inmates for more than 20 years? Meanwhile, she can only communicate with her granddaughter living under the same roof through hand-written notes. Mrs. ZHENG moved to the USA from China and works tirelessly, with the hope to reunite with his son serving an 84-year sentence. Barbara, an American woman, who is bound to wheelchairs due to a rare disease and also lost her husband tragically, comforts the inmates and finds peace for her own mind through music.A moving relationship between strangers who have formed a kinship. A heart-rending transformation takes place between the grandmother and her grand-child that ends their alienation. An indescribable love calls the child to come home.